Improved



UNITED STATES PATENT QEEICEm JOHN S. MCMILLIN, OF PITTSBURG,PENNSYLVANIA.

IMPROVED APPLICATION OF STEAM-POWER TO TH CAPSTANS 0F VESSELS.

Specification forming part of Letters Patent No. 63,917, dated April 16,1867.

To all whom it may concern:

Be it known that I, JOHN S. MGMILLIN, of the city of Pittsburg, countyof Allegheny and State of Pennsylvania, have invented a new and usefulImprovement in Applying Steam-Power to the Capstans of Steamboats andother crafts; and I do hereby declare that the following is a full andexact description of the same.

The nature of myinvention consists in connecting the capstan with thefreight-hoisting engine or other engine of steamboats and other craftsby-,means of shafts and cog-wheels, so as to operate the capstan bysteam-power instead of hand power as has been generally used heretofore.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation, reference being hadto the annexed drawings forming part of this specification, in which-Figure l is a side elevation of the capstan, hoisting-engine, and theshaft and wheel connection between them; Fig. 2, a front view of thehoisting-engine and connectingshafts; Fig. 3, a plan of situation of thecapstan, er1- gine, and connecting-shafts at the forecastle of the boat.

In all the figures the same letters refer to the like parts in each.

A is the deck; A', the boiler-deck; B, the capstan; C, thehoisting-engine; F, the Wooden framefwork of the engine; D, theengineshaft; E E, the hoisting-rollers,connected with the en gine-shaftby the cog-wheels a and b. G is a vertical shaft extending from the holdof the boat to the cargo wheel-shaftg; with the latter it is connectedby the bevel-wheels o d. H is a horizontal shaft in the hold of theboat,

at the middle bulk-head,extending from the vertical shaftGto thecapstanB. With theformer it is connected bythe bevel-wheelsl ef, andwith the latter by the bevel-wheels g h. The capstan is permanentlyfastened to its shaft J. The vertical shaft G is arranged so that it canbe lifted or lowered by means of the set-screw Z, whereby thebevel-wheels c d and e f can be set out or in gear at leisure,interrupting or hands necessary in the operation.

rlhe advantage in the above-described arrangement is that two men in onehour can do with it the labor of more than six under the old plan Wherehand-power is used. It works steadily and regularly, and the lives ofthemen are not endangered as in the old plan.

What I claim herein as myinvention, and desire to secure by LettersPatent, is-

Rotating a capstan placed on deck ofa boat by means of an auxiliaryengine, when said engine and capstan are placed forward of thesteam-boilers of said boat, substantially as hereinbefore described, andfor the purposes set forth.

JOHN S. MGMILLIN. Witnesses:

W. O. LESLIE, H. MoEsER.

